UPDATE: I got another Battle City hack from Yanshan Software called Future Tank. I wrote about it a little here.

Here’s the goal of Tank A 1990. You’re a tank, and you’re guarding some eagle statue thing. I’m sure that there’s some backstory for what the eagle is and why you’re guarding it, but I’m too lazy to go try and figure out what it is. Whatever, you’re guarding it. There’s also a bunch of other tanks that want to kill you and the eagle statue. If they shoot you, you lose a life. If you lose all your lives, it’s game over. It’s also game over if the enemy tanks destroy the eagle statue. You can hide under bushes, you can shoot bricks to make a path, and you can shoot enemy tanks. There are blocks you can’t break, and there is water that you can shoot through but can’t go through. You can get power-ups that let you shoot faster, destroy all the enemy tanks at once, break the blocks, go over water, and more.

Some of the enemy tanks are faster than others, and some of them take more than one shot to beat. You are the slowest kind of tank, and it only takes one shot to kill you. If this eagle statue is so important, the guy in charge of it is being an idiot to only have one tank guarding it. Maybe there’s some backstory for that, but I dunno.

Oh, and also it has a level editor.

Here’s some screenshots of Tank A 1990:

Level 1:

Level 2:

Level 3:

Here’s a video of some gameplay:
If you want to play this game yourself, it’s VERY common on multicarts. Also the game isn’t always called Tank A 1990. Sometimes it’s called 90 Tank, Great Tank, Tank A, and a lot of other names, probably. You could also play it on an emulator if you want.